Nord Pool is Europe's leading power exchange, operating since 1996. It facilitates electricity trading across the Nordic and Baltic countries: Norway, Sweden, Finland, Denmark, Estonia, Latvia, and Lithuania. Understanding how Nord Pool works helps you make smarter decisions about when to use electricity and potentially save money on your energy bills.
The Day-Ahead Market (Elspot)
The primary trading mechanism on Nord Pool is the day-ahead market, known as Elspot. Here's how the daily auction works:
- By 12:00 CET — All market participants submit their bids for the next day. Power producers (power plants, wind farms, solar farms) submit sell orders, while suppliers and large consumers submit buy orders.
- Price calculation — Nord Pool's algorithm matches supply and demand to determine the market-clearing price for each hour (or 15-minute interval since October 2025).
- By 14:00 CET — Prices for the next day are published for all bidding zones.
Marginal Pricing: The Key Principle
Nord Pool uses marginal pricing, which means the most expensive accepted bid sets the price for everyone. Here's how it works:
Imagine the market needs 1,000 MW of electricity for a particular hour. Producers submit their bids:
- Wind farm: 200 MW at €0/MWh (willing to sell at any price)
- Nuclear plant: 400 MW at €15/MWh
- Gas plant: 300 MW at €80/MWh
- Oil plant: 200 MW at €150/MWh
To meet the 1,000 MW demand, the market accepts bids from wind, nuclear, and gas (totaling 900 MW), plus 100 MW from the oil plant. The clearing price becomes €150/MWh — the price of the last unit needed to balance supply and demand.
Price Zones Explained
Nord Pool is divided into multiple bidding zones because transmission capacity between regions is limited. When there's congestion (not enough cable capacity to move power), prices differ between zones.
| Country | Zone(s) | Notes |
|---|---|---|
| Norway | NO1, NO2, NO3, NO4, NO5 | 5 zones; hydro-dominant, often lowest prices in NO4 |
| Sweden | SE1, SE2, SE3, SE4 | 4 zones; northern zones cheaper (hydro), south more expensive |
| Finland | FI | Single zone; connected to Sweden, Estonia, Russia |
| Denmark | DK1, DK2 | 2 zones; DK1 (west) connected to Germany, DK2 (east) to Sweden |
| Estonia | EE | Single zone; connected to Finland (EstLink), Latvia |
| Latvia | LV | Single zone; between Estonia and Lithuania |
| Lithuania | LT | Single zone; connected to Sweden (NordBalt), Poland |
The 15-Minute Revolution (October 2025)
Since October 2025, Nord Pool has transitioned from hourly to 15-minute trading intervals. Instead of 24 price points per day, there are now 96. This change was driven by the growth of renewable energy:
- Wind and solar are unpredictable — Production can change rapidly within an hour
- Better grid balancing — 15-minute intervals allow more precise matching of supply and demand
- More saving opportunities — Consumers can target short price dips that were previously hidden within hourly averages
Our service fully supports both 15-minute and hourly views — switch between them using the buttons on the main screen.
What Affects Nord Pool Prices?
Factors that lower prices
- Strong wind — More wind power pushes expensive thermal plants out of the merit order
- Sunny weather — Solar production peaks around midday
- Low demand — Nights, weekends, holidays
- High reservoir levels — In Norway and Sweden, abundant hydro keeps prices low
- Mild temperatures — Less heating or cooling needed
Factors that raise prices
- Calm weather — No wind means thermal plants must run
- Peak demand hours — Mornings (7-9) and evenings (17-21)
- Cold snaps — Electric heating increases demand dramatically
- Dry periods — Low hydro reservoir levels in Nordics
- Transmission constraints — Limited cables between cheap and expensive zones
- High CO₂ prices — Makes fossil fuel plants more expensive
Beyond the Day-Ahead Market
While Elspot (day-ahead) is the main market, Nord Pool also operates:
- Intraday market (Elbas) — Continuous trading up to one hour before delivery, used to adjust positions when forecasts change
- Balancing market — Operated by TSOs (Transmission System Operators) to maintain grid frequency in real-time
For residential consumers, the day-ahead price is what matters — it's what your electricity supplier uses to calculate your bill on a spot-price contract.